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| author | H.J. Lu <hjl.tools@gmail.com> | 2022-05-05 13:59:16 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2022-05-05 13:59:16 -0700 |
| commit | a48be2e513d9ddb2fa8800a158f18502a0923aec (patch) | |
| tree | 88bfe3ab36ad7dfbda739e483180ca983c02708c /libsanitizer/sanitizer_common | |
| parent | b6b66006787b0991e94f15c7b5c56403f1eb85fb (diff) | |
| download | gcc-a48be2e513d9ddb2fa8800a158f18502a0923aec.zip gcc-a48be2e513d9ddb2fa8800a158f18502a0923aec.tar.gz gcc-a48be2e513d9ddb2fa8800a158f18502a0923aec.tar.bz2 | |
libsanitizer: cherry-pick commit b226894d475b from upstream
cherry-pick:
b226894d475b [sanitizer] [sanitizer] Correct GetTls for x32
Diffstat (limited to 'libsanitizer/sanitizer_common')
| -rw-r--r-- | libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cpp b/libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cpp index d966d85..620267c 100644 --- a/libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cpp +++ b/libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cpp @@ -462,7 +462,11 @@ static void GetTls(uptr *addr, uptr *size) { #elif SANITIZER_GLIBC && defined(__x86_64__) // For aarch64 and x86-64, use an O(1) approach which requires relatively // precise ThreadDescriptorSize. g_tls_size was initialized in InitTlsSize. +# if SANITIZER_X32 + asm("mov %%fs:8,%0" : "=r"(*addr)); +# else asm("mov %%fs:16,%0" : "=r"(*addr)); +# endif *size = g_tls_size; *addr -= *size; *addr += ThreadDescriptorSize(); |